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Old 09-28-2012, 04:52 PM   #26
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Join Date: Oct 2010
Location: Minnesnowta
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My Ride: 4cyl of fury
Originally Posted by tomoyer View Post
got a question for either SamDoe1 or Kubica, what is the DISA Valve and where is it on a 325xi?
DISA is the intake actuator valve. It alters the length of the intake runner for either low end torque or high end horsepower. If you notice a "hump" in the powerband at around 4k rpm, that's the changeover the DISA makes.

It's the rectangular black box mounted to the top driver's side of the intake manifold. Has a little solenoid on it too, can't miss it.
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